I am replacing the A/C condenser and the A/C receiver drier on my Impala 2005, 3.4L engine. How much PAG oil 150 I need to put in these two components before assembling it back? The system will be later evacuated from the air and filled up with the refrigerant.

 

I too can't find much info on PAG oil.

Porsche says that on a 928, the oil is approximately distributed:
compressor - 40%;
evaporator - 35%;
condenser - 15%;
receiver/dryer & lines 10%.
But that's is on Porsche 928 AC system.
Will it be similar with other AC systems?

 

I thought I read a procedure somewhere that when performing this service to drain each component when removed and add up the total amount collectively then simply put that amount back in. I'll have to look and see if I can retrace where I came across this...

 

I've finished installation and I've put 0.5 oz in each component. Took my Chevy to a local repair shop and they evacuated and filled up the system. It's been working since that time really good. By the way, do not purchase the condenser in the auto store, they are way too expensive. You can purchase teh same condenser on Ebay.com much cheaper. Here is the link
NEW 2004-2005 FITS CNDDPI3249 PONTIAC GRAND PRIX MONTE CARLO IMPALA AC CONDENSER
Have fun with it!

 

I hope my link cam through
NEW 2004-2005 FITS CNDDPI3249 PONTIAC GRAND PRIX MONTE CARLO IMPALA AC CONDENSER | eBay
Here it is in a full length.
Regards